Hello, Sebastian.
> entryRules describe a complete document from the beginning to the end.
Therefore the EOF token is used in these rules.
But is it normal that entryRules were generated for each of my Xtext parser
rules?
> They serve as parser rules if partial parsing is applied during editing
of a file.
why?.. What problem does "EOF" in entry rules solve in the case of partial
parsing?
>In your particular example it seems to be a bug in Antlr, e.g. if I
manually edit the generated grammar and put meaningless parentheses
> around the the subrule for id1 = ID?, I don't the the error anymore.
Could you please send my this grammar? Because when I try to put
meaningless parentheses around lv_id1_1_0=RULE_ID nothing happens (and
especially if I put them for Xtext grammar id1 = ID?). I do it with
antlr.3.2 in command line mode. Because I have seen some very strange
problem with antlrWorks (a gui for antlr): when I open the program and
check the grammar for the first time it shows THE error ("bla bla RULE_ID
EOF EOF"), but when I click it once again it never shows that and it seems
to be a bug! Maybe you worked in AntlrWorks and you didn't get the error
for the second time just because it just never shows up in this case?... I
will write to antlr support as soon as I got to know your workflow in which
you managed to avoid the error.
On 14 January 2014 12:28, Sebastian Zarnekow
<[email protected]>wrote:
> Hi Oleg,
>
> entryRules describe a complete document from the beginning to the end.
> Therefore the EOF token is used in these rules.
> They serve as parser rules if partial parsing is applied during editing of
> a file.
>
> In your particular example it seems to be a bug in Antlr, e.g. if I
> manually edit the generated grammar and put meaningless parentheses around
> the the subrule for id1 = ID?, I don't the the error anymore.
> I'm afraid you have to refactor your grammar slightly to adopt to that
> issue.
> I'd also recommend to use Java-conventional names for the production
> rules, e.g. TranlationUnit instead of translation_unit as there will be
> Java classes created from those names.
>
> Regards,
> Sebastian
>
>
> On 14.01.2014, at 09:12, Oleg Bolshakov wrote:
>
> Hello, I posted the message on the forum
> http://www.eclipse.org/forums/index.php/t/636966/
>
> The problem seems to be somehow connected to the extensive use of "EOF"
> tokens in generated antlr grammar though I can not understand why it's
> done. Are there any info on what "entry rules" in generated grammar mean
> and why EOF at the end of them is needed?
> _______________________________________________
> xtext-dev mailing list
> [email protected]
> https://dev.eclipse.org/mailman/listinfo/xtext-dev
>
>
>
> _______________________________________________
> xtext-dev mailing list
> [email protected]
> https://dev.eclipse.org/mailman/listinfo/xtext-dev
>
>
_______________________________________________
xtext-dev mailing list
[email protected]
https://dev.eclipse.org/mailman/listinfo/xtext-dev
